FI76984B - U-FORMIG TILLSLUTNINGSKLAEMMA AV BANDFORMIGT MATERIAL. - Google Patents

Description

1 76984

U-shaped closure clamp made of strip-like material

The invention relates to a U-shaped closure of strip-like material for hoses and bags, the clamp consisting of a clamp base and two branches and the ends of the clamp branches bent outwards and forming a connecting step by which the clamp is releasably fastened in a strip with other clamps and between the clamp base and branches the inner radius is at least 10 equal to the thickness of the strip-like material.

Closing the packing end of a bag or hose with this clamp is done by first placing the clamp at the bottom of the clamp with the arms facing upwards in a suitable matrix, and then placing the closable, usually compressed or twisted end of the wrapping wrapper in the clamp, after which the punch approaches and closes it (DE patents 1,078,495, 1,761,616 and 2,606,658).

Such sealing pins made of strip-like material are subject to increasing requirements in terms of holding force, sliding strength and tight sealing, which are particularly important for sealing air-impermeable casings. Different forces act on such a closing clamp (cf. DE patent publication 25 2 606 658, column 1/2). This barrier pin increased the holding force and sliding strength and improved the barrier force so that the strip-like material in the region of the pin base and the branches is partially grooved inwards at its outer edges by forming two beads running along this outer edge. However, these closure clamps have a small radius at the connecting arcs between the clamp base and the clamp branches. Thus, the closed end in the closed state does not always become sufficiently compressed at these points, which is why in certain cases Kapil-35 lar formation can occur at these points, which in turn can lead to leakage and thus grease leakage or air entry in the sealing point.

2 76984 In addition, the use of this sealing clip only makes sense when relatively large-diameter sausages are to be sealed, from about 60 mm onwards.

It is therefore an object of the invention to improve such closure clips so that, especially when using airtight salts, e.g. fiber salts made of polyvinyl chloride, polyamide, polyester or coated on the inside or outside with plastic, they do not slide on a relatively smooth intestinal surface and form mainly a greasy and airtight seal and that they can also be meaningfully used for smaller diameter sausages.

According to the invention, this object is solved in such a way that the closing clamp is preferably provided with an inwardly pointing, approximately centrally located stiffening bellows, which is delimited approximately in the region of the pin base and the connecting arcs.

The combination of measures proposed to solve the problem results in substantially improved barrier pressure. Increasing the internal radius in the connecting arches between the clamp base and the branches compared to traditional closure clamps results in no more angles between the clamp base and the branches. This achieves that: the end of the sausage shell completely fills the closed clamp, so that it is firmly compressed over its entire surface. This prevents the risk of capillary formation and thus the outflow of grease or the entry of air into the sealing point is substantially avoided.

The preservation of the rectilinear pin bottom, in particular with the use of closures with relatively long arms in the closure of large-diameter sausages, ensures that they do not twist out of the matrix during the closure phase after separation from the clamp strip. The stiffening ball, which is limited to the area of the pin base and the connecting arches 35, increases the strength against the bending of the closing clamp, and if it is preferably directed inwards, it 3 76984 also increases the slip resistance. By limiting the bead to the area of the connecting arches of the pinion base and the arms, it is achieved that the resistance of the pinch arms to change in the closing phase in the upper region remains as small as possible, so that a small closing force saves the machine and the gut. All in all, the measures according to the invention, with the material consumption remaining the same, a barrier clamp with considerably improved properties or the same permanent barrier force achieve material savings. Thus, compared to the closing clamp without large radii of the connecting arcs and without the inner bellows in the stressed area, it was possible to - improve the holding force by about 20%, the clip slip ratio (start of sliding with a rupture pressure value of kp / cm 2) by about 20% and the grease requirement by about 30%.

The closing clamp according to the invention is particularly suitable for closing cooked sausages treated in autoclaves, in which case the internal pressure of the sausage rises sharply, boiling sausages which are cooked or boiled and sausages which have a long shelf life.

20 A special application is also the sealing of externally coated fiber casings, the coating of which is so smooth that the clamps can easily slip off due to the filling pressure or the internal pressure rising during cooking.

The object underlying the invention, in particular with smaller diameter sausages, i.e. less than about 50 mm in diameter, can be solved by a variant of the invention such that the connecting arcs form a circular arc with a common radius with the pin base. In this case, due to the short arms, there is no danger that the closing clamp will rotate out of the matrix when cutting and closing.

However, single clamps for closing sausage casings are known in which the clamp base is formed as a circular arc (U.S. Pat. Nos. 2,972,791 and 3,017,638). This clamp has two outwardly directed diaphragms, which, however, extend into the region of the inwardly bent arms. These closure clamps do not correspond to the 4,76984 clamps described herein because they cannot be made as end-to-end tapes. In addition, long bellows require a large closing force. Although another known single clamp (U.S. Pat. No. 3,061,838) also has a circular clamp base, it obtains stiffening from the chords of the outer edge.

Also, this barrier clamp would not be SOplVa for the fabrication of the clamped strips contained herein, as a lot of waste would be generated and the clamps could cause considerable hazards at their sharp edges.

10 The basis for both of these individual clamps has not been the underlying function of the invention, but in order to save material, the individual clamps had to be made of thin sheet metal, so that the underlying function of the invention has not been solved either.

In order to strengthen the holding force, in particular for large-diameter and heavy sausages (diameter over approx. 60 mm and weight over approx. 1 kg), it is also expedient to provide a printed groove 20 Thus, two diaphragms running along the outer edge are created, whereby a stronger steepness on the inner side of the clamp is appropriate, which further increases the sliding strength and holding force. The indentation also leads to a higher material strength and thus allows; 25 material savings.

In all the comparisons were, in fact, known. longitudinal grooves located on the inner surface of the clamp, preferably in the area of the branches where the inner ball does not extend, to strengthen the sliding strength relative to the sul-30 cups made of a uniform material.

The ends of the branches bent outwards must have a U-shaped recess at their lower side at the bending point with the clamping branch in order to ensure the associated advantages.

The invention will be described with the aid of the following figures: Figure 1 shows a closure clamp separated from a clamp strip according to the invention, seen from the side, with two connecting arches between the clamp base and the branches.

Il 5 76984

Figure 2 shows a side view of the barrier surface separated from the pin strip with its common radii.

Fig. 3 shows three integral closing surfaces according to Fig. 1 with grooves printed on the outer edge.

Fig. 4 shows the closing clamp according to Fig. 3 in the closed state.

Fig. 5 shows a partial section A-A of the closed clamp according to Fig. 4.

Figure 1 shows a closure pin 10 with its pin bases 1 separated from the pin strip, in which the arms 2, 3 are connected by arcs 4,5. Both connecting arcs 4,5 have radii R4 and R5 which are larger than the thickness of the strip-like material of the clamp. Above the pin base 1 and the connecting arcs 4,5 extends an inwardly directed stiffening sphere 6 which extends approximately 15 to the transition of the connecting arcs and thus to the height of the centers of the radii R4 and R5 and terminates directly in the region 7.8. The legs 2,3 terminate at the bending points of the outwardly bent leg ends 9,10, whereby U-shaped recesses 11,12 are placed on their lower surface.

Fig. 2 shows a closing surface separated from the pin strip, in which - unlike Fig. 1 - the connecting arcs 4,5 form one circular arc with the pin base 1 with common radii R, so that there is a common center point 13.

Fig. 3 shows a row of pins from the pins 25 according to Fig. 1, in which case through-grooves 14,15 are also printed on the outer edges of the strip-like material in the region of the stiffening bead 6 (Fig. 5).

Figure 4 shows the cover of Figure 3 closed around the end 16 of the package. It will be appreciated that the end 16 of the sausage casing 30 completely fills the closed clamp in the region of the connecting arcs 4,5, so that it becomes firmly compressed over its entire surface.

Figure 5 shows a partial section A-A of the joint 17, the end 16 of the sausage casing and the pin base 1. The grooves 14,15 printed on the outer edge of the pin 35 form ribs 20,21 on the inner side of the pin and 22.23 on the outside.

Claims (4)

6 76984 A U-shaped closure clamp of strip-like material for hoses and bags, wherein the clamp consists of 5 clamp bottoms (1) and two branches (2, 3) and the ends (9, 10) of the clamp branches are bent outwards and form a connecting step by which the clamp is releasably attached as a strip to the other clamps and the inner radius (R4, R5) 10 of the connecting arcs (4, 5) between the clamp base (1) and the branches (2, 3) is at least equal to the thickness of the strip-like material, characterized in that it is preferably provided with an inwardly pointing, approximately centrally located stiffening bellows (6), which is limited approximately to the area of the pin base (1) and the connecting arches (4, 5). U-shaped closure according to Claim 1, characterized in that the inner radius (R4, R5) of the connecting arcs (4, 5) between the pin base (1) and the branches (2, 3) is at least twice as large as the strip 20 the thickness of its material. U-shaped closure clamp according to Claim 1 or 2, characterized in that the connecting arcs (4,5) form a circular arc with the clamp base (1) which has a common radius (R). Closure clamp according to one of Claims 1 to 3, characterized in that continuous grooves (14, 15) are additionally printed on the outer edges of the strip-shaped material, in the region of the clamp base (1) and the branches (2, 3), preferably in the region of the stiffening bead (6). .